/* 加入我们 */
.join {
    position: relative;
}
/* 大标题 */
.join h2 {
    height: 190px;
    line-height: 190px;
    font-size: 46px;
}
.join h2 span {
    border-bottom: 7px solid rgb(218, 218, 218);
}
.introduce ol li {
    line-height: 42px;
    font-size: 24px;
}
/* 瀑布 */
.bigBox {
    position: relative;
    column-count: 2;
    column-gap: 70px;
    margin-bottom: 200px;
    padding-right: 30px;
}
.bigBox .introduce {
    height: 300px;
    border: none;
    margin-bottom: 0px;
    box-shadow: none;
}
.bigBox div {
    width: 560px;
    border: 1px solid rgb(218, 218, 218);
    margin-bottom: 200px;
    cursor: pointer;
    /* box-shadow: 5px 5px 20px #737373; */
}
.bigBox div:hover {
    animation: down 2s ease alternate 2;
}
.bigBox .introduce:hover {
    animation: none;
}
.bigBox div strong {
    display: inline-block;
    margin: 20px 0px 20px 20px;
    font-size: 33px;
    padding-left: 10px;
    border-left: 8px solid #0f9cf5;
}
.bigBox div p {
    width: 520px;
    margin: 0 auto;
    font-size: 23px;
    line-height: 36px;
    margin-bottom: 30px;
}
/* 三个灰色 */
div[class^= 'grey'] {
    background-color: rgb(248, 248, 248);
    width: 100%;
    height: 870px;
    z-index: -1;
}
.grey1 {
    position: absolute;
    top: 300px;
}
.grey2 {
    position: absolute;
    top: 2500px;
}
/* 三个小圆圈 */
.joinLi {
    position: absolute;
    bottom: 50px;
    right: 30px;
}